US9054613B2 - Motor drive apparatus and vehicle with the same mounted thereon - Google Patents

Motor drive apparatus and vehicle with the same mounted thereon Download PDF

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Publication number
US9054613B2
US9054613B2 US13/699,186 US201013699186A US9054613B2 US 9054613 B2 US9054613 B2 US 9054613B2 US 201013699186 A US201013699186 A US 201013699186A US 9054613 B2 US9054613 B2 US 9054613B2
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Prior art keywords
motor
temperature
permanent magnet
current
rotation speed
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Expired - Fee Related, expires
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US13/699,186
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US20130063061A1 (en
Inventor
Hideto Hanada
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Toyota Motor Corp
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Toyota Motor Corp
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Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA reassignment TOYOTA JIDOSHA KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HANADA, HIDETO
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    • H02P6/145—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/66—Controlling or determining the temperature of the rotor
    • H02P29/662—Controlling or determining the temperature of the rotor the rotor having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H02P29/0066—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/62—Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor

Definitions

  • FIG. 7 shows a relationship between the rotor and the stator in a planar view when current correction control in the present embodiment is applied.
  • FIG. 11 is a flowchart for describing details of a current correction control process executed by the ECU in the present embodiment.
  • System relay SR 1 has one end connected to a positive electrode terminal of power storage device 110 , and the other end connected to a power line PL 1 .
  • System relay SR 2 has one end connected to a negative electrode terminal of power storage device 110 , and the other end connected to a ground line NL.
  • System relays SRI and SR 2 are controlled in accordance with a signal SE provided from ECU 300 , and switch between supply and interruption of electric power between power storage device 110 and converter 120 .
  • Capacitor C 2 is connected between power line PL 2 and ground line NL. Capacitor C 2 smoothes a DC voltage provided from converter 120 and supplies the smoothed DC voltage to inverter 130 . A voltage sensor 13 detects a voltage across capacitor C 2 , i.e., system voltage VH and outputs the detected value to ECU 300 .
  • Motor generator MG 1 generates a rotating magnetic field using an AC drive current supplied from inverter 131 to the coils of the respective phases, and rotates the rotor using this generated rotating magnetic field.
  • inverter 135 receives a control signal PWI 2 corresponding to a torque command value TR 2 of motor generator MG 2 from ECU 300 and drives motor generator MG 2 such that the DC voltage is converted into an AC voltage by the switching operation in response to control signal PWI 2 and prescribed torque is attained.
  • the magnitude of the superimposed offset current can be set to a certain value regardless of the rotation speed of the motor generator. As described above, however, the counter-electromotive voltage generated at the motor generator increases as the rotation speed becomes higher, and thus, it is preferable, from the viewpoint of protection of the equipment, to raise the temperature of the permanent magnet in a shorter time when the rotation speed is high. Therefore, in the present embodiment, the magnitude of the superimposed offset current is increased in accordance with an increase in the rotation speed. As a result, the intensity of the certain magnetic field generated due to the offset current increases as the rotation speed becomes higher, and thus, the eddy current generated at the permanent magnet increases as well and an amount of temperature rise of the permanent magnet increases.
  • the vehicle starts to run and the rotation speed of the motor generator increases with time.
  • the offset flag is set OFF in order to suppress the vibration caused by the torque variation, and the offset current is set to zero.
  • the offset flag is set ON and the offset current is set to linearly increase substantially in proportion to the increase in the rotation speed.
  • FIG. 12 is a control block diagram for describing a motor control configuration in ECU 300 in a modification.
  • the control block diagram in FIG. 12 is different from the control block diagram in the first embodiment shown in FIG. 2 in that correction unit 360 is deleted, and instead of correction unit 360 , a correction unit 361 and a coordinate conversion unit 321 are added. Description of elements overlapping with the elements in FIG. 2 will not be repeated in FIG. 12 .
  • FIG. 13 is a flowchart for describing details of a current correction control process executed by ECU 300 in the modification.
  • the flowchart in FIG. 13 is different from the flowchart in the first embodiment shown in FIG. 11 in that step S 140 is replaced with S 145 . Description of steps overlapping with the steps in FIG. 11 will not be repeated in FIG. 13 .
  • a set value of the offset current is calculated in S 130 . If rotation speeds MRN 1 and MRN 2 of motor generators MG 1 and MG 2 are equal to or lower than the reference speed (NO in S 120 ), a set value of the offset current is set to zero in S 135 .
  • an amount of temperature rise of the permanent magnet at each operating point defined based on the torque command value and the rotation speed is calculated using a map measured in advance by experiments and the like, and this amount of temperature rise ⁇ T is summed in the time axis direction, thereby estimating the temperature of the permanent magnet of the motor generator. Based on the fact that the estimated temperature of the permanent magnet reaches the desired temperature, superimposition of the offset current is stopped, thereby preventing the temperature of the permanent magnet from rising to a temperature higher than necessary.
  • ECU 300 determines that raising the temperature of the permanent magnet is necessary, and executes the process in S 120 and the subsequent steps to raise the temperature of the permanent magnet similarly to the first embodiment.
  • the temperature of the permanent magnet reaches the desired temperature without separately placing a detection device for measuring the temperature of the permanent magnet. Furthermore, based on the fact that the temperature of the permanent magnet reaches the desired temperature, superimposition of the offset current can be stopped. As a result, the temperature of the permanent magnet can be prevented from rising to a temperature higher than necessary, and occurrence of the vibration and reduction in efficiency can be suppressed.
  • a signal wave W 41 corresponding to voltage command values Vu, Vv and Vw of the respective phases provided from coordinate conversion unit 340 is compared with a carrier wave W 40 having a prescribed frequency. Then, between a section in which the carrier wave voltage is higher than the signal wave voltage and a section in which the signal wave voltage is higher than the carrier wave voltage, the switching element in the arm of each phase of inverter 131 ( 135 ) is switched between ON and OFF, and thereby the AC voltage, which is a collection of square-wave voltages, can be supplied to motor generator MG 1 (MG 2 ) as an inverter output voltage of each phase.
  • the fundamental wave component of this AC voltage is shown by a dotted line W 42 in FIG. 17 .
  • the frequency (carrier frequency) of carrier wave W 40 corresponds to the switching frequency of each switching element constituting inverter 131 ( 135 ).
  • the waveform of the output current of the inverter i.e., the motor current of the motor generator is WV 1
  • the eddy current at the stator due to the high-frequency current increases as compared with the case where the waveform is WV 2 .
  • a total amount of heat generated at the motor generator including the temperature of the permanent magnet provided at the rotor, can be relatively increased. Therefore, it is understood that the magnet temperature can be actively raised by reducing the carrier frequency.
  • temperature sensor 22 detects the temperature of motor generator MG 1 and outputs a detected value TM to ECU 300 .
  • Temperature sensor 22 is attached to, for example, a portion inside the coil of the stator or the casing of motor generator MG 1 . Since ECU 300 can estimate the temperature of the permanent magnet of the motor generator based on motor temperature TM detected by temperature sensor 22 , motor temperature TM is used as a value representative of the temperature of the permanent magnet in the third embodiment.
  • FIG. 20 is a flowchart for describing details of a current correction control process executed by ECU 300 in the third embodiment.
  • the flowchart in FIG. 20 is different from the flowchart in the first embodiment shown in FIG. 11 in that steps S 111 to S 114 are added. Description of steps overlapping with the steps in FIG. 11 will not be repeated in FIG. 20 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Ac Motors In General (AREA)
US13/699,186 2010-06-25 2010-06-25 Motor drive apparatus and vehicle with the same mounted thereon Expired - Fee Related US9054613B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/060842 WO2011161811A1 (ja) 2010-06-25 2010-06-25 モータ駆動装置およびそれを搭載する車両

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US20130063061A1 US20130063061A1 (en) 2013-03-14
US9054613B2 true US9054613B2 (en) 2015-06-09

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US (1) US9054613B2 (zh)
EP (1) EP2587664B1 (zh)
JP (1) JP5454685B2 (zh)
CN (1) CN102959855B (zh)
WO (1) WO2011161811A1 (zh)

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US20140125268A1 (en) * 2010-12-02 2014-05-08 Mercedes Herranz Gracia Method and device for operating an electrical machine having separate excitation
US20160043671A1 (en) * 2013-03-28 2016-02-11 Trw Limited Motor Drive Circuit and Method of Driving a Motor
US10720875B2 (en) * 2018-10-08 2020-07-21 Hyundai Motor Company Apparatus for controlling drive motor of vehicle and method using the same
US11352048B2 (en) * 2018-09-28 2022-06-07 Jtekt Corporation Rotation detection device

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JP5644854B2 (ja) * 2010-04-28 2014-12-24 トヨタ自動車株式会社 電動機の制御装置および制御方法
JP5408394B1 (ja) * 2012-06-12 2014-02-05 パナソニック株式会社 モータ制御システム、モータ制御方法およびモータ制御装置
JP2014023338A (ja) * 2012-07-20 2014-02-03 Aida Engineering Ltd 永久磁石モータとその駆動方法、並びに、永久磁石モータの制御装置
JP2014024442A (ja) * 2012-07-26 2014-02-06 Toyota Motor Corp ハイブリッド車両用動力装置の制御装置
JP2014045575A (ja) * 2012-08-27 2014-03-13 Toyota Motor Corp 回転電機の駆動制御装置
US8866326B1 (en) * 2013-04-10 2014-10-21 Hamilton Sundstrand Corporation Interleaved motor controllers for an electric taxi system
US9318991B2 (en) * 2013-04-11 2016-04-19 The Boeing Company Electric motor frequency modulation system
JP6131715B2 (ja) * 2013-05-24 2017-05-24 日産自動車株式会社 モータ制御装置
GB2515083B (en) * 2013-06-13 2017-02-22 Dyson Technology Ltd Reducing the power consumption of a brushless motor
JP6062324B2 (ja) * 2013-06-14 2017-01-18 日立オートモティブシステムズ株式会社 エンジン始動装置およびエンジン始動制御方法
JP2015082943A (ja) * 2013-10-24 2015-04-27 トヨタ自動車株式会社 車両制御装置
US20150229249A1 (en) * 2014-02-13 2015-08-13 GM Global Technology Operations LLC Electronic motor-generator system and method for controlling an electric motor-generator
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EP2587664A1 (en) 2013-05-01
CN102959855A (zh) 2013-03-06
WO2011161811A1 (ja) 2011-12-29
JPWO2011161811A1 (ja) 2013-08-19
EP2587664A4 (en) 2015-04-22
JP5454685B2 (ja) 2014-03-26
US20130063061A1 (en) 2013-03-14
EP2587664B1 (en) 2016-08-31
CN102959855B (zh) 2015-01-21

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